I was able to refill the transmission through the clutch but at first I attempted to to refill it through these pins.
I am not understanding what you are trying to say. It is not possible to "refill the transmission through the clutch". The clutch consists of a flywheel, friction disk, pressure plate, and throw out bearing. All of which is located inside of the bellhousing. It is dry inside the bell housing. If you put gear oil inside of the bell housing it would simply pour back out of the bottom. It is not a sealed unit.
